Three hundred and sixty three aerometrical beads, two slide-rules, one thermometer, six glass rods and an instruction book, all in a drawer of a mahogany box, and made by J. Lovi of Edinburgh, c. 1810

Excise officer's slide-rule of boxwood, with a slider on each of the four faces, and gauge points on the reverse of one slider, maker unknown, 19th century

Slide rule by W. and S. Jones of London, made about 1820

Aristo Multi Rietz' slide rule, numbered 929, in original box, made by Aristo, made in Germany, mid 20th century

Wine and spirit merchants slide rule, made of boxwood, made by Frank C. Farmar, England c.1900

Hinged slide rule for use in the cotton mill industry, used to calculate yarn counts, measure cotton and draughts of mules, instructions for use are stamped on the reverse, made of wood with a sliding brass inlaid measure, designed by William Slater, Bolton mid 19th century

Double hinged slide rule and timber rule by Dring and Fage, early - mid 20th century

Demonstration slide rule of white plastic, with green ends and steel wall fixings, in a wooden case, made by Faber & Castell, Germany, c. 1970

Folding Engineers' slide rule of boxwood, designed by Joshua Routledge (1773 - 1829) made by J. Gleave & Son, Manchester, 19th century

Cosine / sine slide rule of wood with white coating in a green case, with a table printed on card, printed in Munich, Germany, slide rule made by A. G. Thornton Ltd, Manchester, England, 1959

Pocket plate and bar rule of Charles Hoare's design, made by Aston and Mander, London, mid - late 19th century

Mannheim slide rule, Rietz scale group, plastic-coated wood ruler and slide strip, perspex cursor, in two-part green case, by Faber-Castell, Germany, 1940s

Nuclear weapon effects computer probably made in UK, 1960s

Folding linear slide rule, twenty-four inch, made of boxwood and brass, belonged to James Veitch, unsigned, early 19th century

Aristo-Aviat G slide rule, part of a Navigation Wallet and one of a collection of items relating to Sheila Scott, OBE

Slide rule, ivory and brass, made by Peter Hill, Edinburgh, 1810 - 1820